Modifying CXX_FLAGS to contain the added C++11 flags.
Modifying CXX_FLAGS to contain the added C++11 flags.

sg0/Elemental,birm/Elemental,mcopik/Elemental,justusc/Elemental,birm/Elemental,justusc/Elemental,mcopik/Elemental,sg0/Elemental,mcopik/Elemental,justusc/Elemental,birm/Elemental,sg0/Elemental,birm/Elemental,mcopik/Elemental,birm/Elemental,mcopik/Elemental,sg0/Elemental,sg0/Elemental,birm/Elemental,sg0/Elemental,mcopik/Elemental,justusc/Elemental,justusc/Elemental,justusc/Elemental